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831159 — STEM,FLUID VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

831159: STEM,FLUID VALVE.

The STEM,FLUID VALVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, cup_width: 1.4275 INCHES NOMINAL IN, bore_diameter: 0.9835 INCHES NOMINAL IN, overall_width: 1.5625 INCHES NOMINAL IN, standout_width: 0.0675 INCHES NOMINAL IN, special_features: OIL HOLE AND GROOVE IN CUP. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-136-0733, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
831159
NSN: 4820-01-136-0733
NIINs: 011360733, 016468997
FSC: 4820 — Valves, Nonpowered
CAGE: 8FGX3 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORP DBA STEAM & AIR SOLUTIONS DIV CURTISS-WRIGHT STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width1.4275 INCHES NOMINAL IN
bore_diameter0.9835 INCHES NOMINAL IN
overall_width1.5625 INCHES NOMINAL IN
standout_width0.0675 INCHES NOMINAL IN
special_featuresOIL HOLE AND GROOVE IN CUP
style_designatorSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES, NON-ADJUSTABLE
cone_corner_radius0.0620 INCHES NOMINAL IN
backface_corner_radius0.0310 INCHES NOMINAL IN
overall_outside_diameter2.4410 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN4820-01-136-0733
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 831159 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES 1
A-4599Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 831159?
831159 is a STEM,FLUID VALVE.
What parts can replace 831159?
There is 1 known substitute for 831159: A-4599. Substitute compatibility should be verified for your specific system.
What is the NSN for 831159?
831159 is cataloged in the U.S. Government catalog under NSN 4820-01-136-0733. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.